Machine for sawing integrally-cast packing rings into segments



R. A. LIGHT AND I. W. PRICE, IR-

MACHINE FOR SAWING INT EGRALLY CAS T PACKING RINGS INTO SEGMENTS.

APPLICATION FILED NOV. 27, I920. 1,413, 3, Patented Apr. 25, 1922.

3 SHEETS-SHEET 22;.. A TTORNEY R. A. LIGHT AND J. W. PRICE, JR. MACHINE FOR SAWING INTEGRALLY CAST PACKING RINGS INTO SEGMENTS.

- APPLICATION FILED NOV- 27, I920. 1,413,668.

Patented Apr. 25, 1922.

3 SHEETS-SHED 2.

.IIIII INVENT R5 at. PML Ir ZQJATTORNEY R. A. LIGHT AND J. W. PRICE, JR. I MACHINE FOR SAWING INTEGRALLY CASTIPACKING RINGS INTO SEGMENTS.

A FPLICATION FILED NOV. 27, I920.- 1,413,668.

3 SHLEI'SSHEET 3.

E lNVENT Rs. V WIT V 5- f BY v @TTORNEY oars STATES'PATEN'T oFFice.

RALPH AJLIGH'I' AND JOSEPH w. rams, .13., or PHILADELPHIA, PENNSYLVANIA, ASSIGNORS TO THE UNITED srnrns METALLIC PACKING COMPANY, or PHILA- DELPHIA,PENNSYLYANIA, .A CORPORATION or rnunsytvanm. I

ACHINE Eon sjAw INe 'INrEenALLY-cAs'r rAcKInGRINGs mo seer/mums.

Specification of Letters Patent. Patented Apfigfi, 1922,

Application filed November 27, 1920. Serial No. 426,75}.

To all whom it may concern:

' Be it known that'we, RALPH A. LIGHT and JOSEPH W. PRICE, 'Jra, citizens of the United States of America, and residents of Philadelphia, in the county of Philadelphia and State "of Pennsylvania, have invented certain new and useful Improvements in Ma chines for Sawing ,Integrally-Cast- Packing Rings into Segments, of which the followof the mold and also in order to give the tapered ends of the cast segments sufficient size and strengthto prevent their breaking in withdrawing them from the mold, to make th mold, especially in that part which forms the tapered ends, considerably larger than the segment is intended to be when finished and this involves a quite considerable loss in the expensive metal of which the segments are formed. Again, the old method of manufacture is defective because I the tapered ends of the segments when properly machined have fine and delicate edges which are very aptto become battered and broken in handling. To obviatethese defects of the old method of manufacture we have devised a a process of manufacturing I I such, rings in'which an integrally solid ring is first cast to approximatelyits desired shape, then sawed into segments with the tapered lapping ends and finally, by preference, compressed so'as to bring the lapping ends into true contact with eachother and give the ring its final manufactured form.

This process of manufacture constitutes the subject matter of our copending application filed November 27, 1920, Serial No. 426,753.

Our present invention has'for itsobject to provide a machine for sawing solid rings into segments with tapered lapping ends and our invention consists of a machine organized to perform this function, operating in the manner and having the features of.

f construction ,.which willfbe best understood 7 as described in connectionwith the drawings and the novel features of which will be pointed out in the claims. i

In thedrawings:

Figure 1 is a plan view of an integrally" cast packing ring, and

Figure 2 a cross sectlonof the ring on the line 2- -2 of Fig. 1, theparts to be prefer ably removed by machine being indicated in dotted lines.

Figu're 3 is a plan view ofthe ring severed into two segmentsby saw cuts made through the ring on circular arcs.

Figure 4 is afsimilar view of the ring after compression to bring the lapping ends into true contact with each other andgive the ring" its final form. I 2" Figure 5 is a plan'view of the integrally straight parallel saw cuts. Figure 6 is a similar 'vi'ew'fshowingfthe ring'inFim 5 after compression.

cast ringdivided into two segments by Figure- 'is a side elevatlon of the ring divided into two segments-by two saw cuts running obliquely through the ring from'top to bottom and in Oppositedirections toea'ch other.

Figure 8 is a plan view of thisring after the sawcu'ts are formedin it.

Figure 9 a plan view of the same ring after compression. i ring after compression, V IFigure 11 a plan View of the ring divided by saw cuts into'thr'e'e'jsegments.

Figure 12 is a" plan view ofour sawing mechanism adapted to" sever. the ring into segments as shown in Fig.3.

Figure 131s a sectional elevation of the sawing mechanism shownpartly on the line 13 -13 and I partly on the 0f.

Fig.12Q- V f, x Figurel t is a'plan view of a-inodifica'tion of'the sawingme'chanismadapted for'severing the ringintosegments as shown-in Fig. 5. I 1

v Figure 15 is U line 15"15'o f Fig. 14, and

Figure 16 1s a similar sectional elevation showing a modification of the, sawing mech-- anism by which it is adapted'to severthe ring as shown in Fig. 8. a g

A, Figs. 1 and 2' indicates'the solid cast r ve B, 4 B2. 5

a sectionalelevation on the Figure 10 a side elevation of the same B indicating the portions of the outer face of the east ring which A and At, Figs. 5 and 6 indicate the seg-V ments into which the ring is divided by the straight saw cuts indicated at C C D D indicating-the lapping tapered ends of V the rings. A and A indicate the two seg ments into whichthe ring divided by the saw cuts indicated at C? and C Figs. 7 to 10; D and D indicating the lapping tapered edges. A, A and AQI ig. 11, indicate three segments into which the ring is divided by saw cuts'indlcated at C C and C D and- D indicating'the lapping tapered edges in this construction. E, Flgs. 12 and 13, is the base plate of the sawing mechanism and F is a chucksupporting plate having a cylindrical plvot extension indicated at F, a

- plate F being pivotallyattached to the base 25 7 cut away as indicated at F so as to clear the E by a pivot pin indicated at G. Plate F is.

saw blade while the ring is being sawed and,

as shown,it has extending out from it the lock supporting block F in which is slidingly supported thelocking'bolt F pressed outwards by a spring F9 and having a grip- F by which it can be drawn backward. H

is a ring supporting chuck having a cylindrical bearing surface H which fits on the surface formed into a groove the sides H cylindrical pivot F and having its upper and H? of which fit against the tapered end of the packing-ring A as shown. H and H are bolt holes formed on opposite sides of the chuck H and at H H, 71. 7L7, we have indicated how this should be cut away in ,order that it may clear the saw blade during the sawing of the ring. I is a clamping plate by-which the ring is clamped in the chuck by means of thethreaded rod J and nut J.

K indicates the framing of the band saw.

supporting :and actuating mechanism. K is a guide block for the saw andK the band saw.

- In the construction shown in Figs. 14 and .15; the supporting plate in the saw mecha nism is indicated at E and has secured upon its face the straight guides indicated 'at Gr and G. The chuck supporting plate indicatedJat f moves in this construction backward. and forward between the guides G, As in the before described construction it is provided with cylindrical pivot extens'ions F. k indicatesthe ring holding chuck 'pivotally supported on the'support and cut ',away at the: sides as indicated at H H to clear the saw blade!v In other respects itv is similar to the chuck alreadydescribed asare the appliances used in connection with-it;

In the construction indicated in Fig. 16,

the base is indicated at E and has an inclined upper surface E on each side of which are provided guides G G for the chuck support indicated at hit indicates the chuck pivotally supported on the chuck support as before but in this construction being located in positio n'on the holder- I first rotated on thepivot G as shown in Figs. '12 andl3 pressing the ring against the saw blade K until the saw out C is formed through it. The supportis turned back on its pivotto clear the saw blade, the locking bolt H is drawn back and the chuck H is rotatedthrough 180 andredocked in this new position after which the support is again turned on its pivot G and the second saw cut formed through the'ring severing it into symmetrical segments having lapping tapered ends which bypreference are then brought into true contact with eachother by pressure. v I In the construction shown in Figs, 14 and 15 themode of operating the mechanism is practically the same as above described 6X- cept that the support 7 in this construction moves backward and forward on a straight line so that the saw blade K will out through the ring as indicated at C C i v Again, in theconstruction indicated in Fig. 16, the operationof the. device is prac tically the same as in Fig. 15 except that the inclination. of the chuck support relative .to the saw blade K? results inseveringthe ring into segments on the linesC and G Having now described our invention, what we claim as-new and desire to secure by Let? ters Patent, is: p 1 In a machine for sawing integrally cast metallic packing rings into segments having lapping ends, a saw,.a chuck for holdingthe rings cut away to give: passage to a saw blade at determined points, a pivotal support for said chuck concentric with thering inposltion therein, on which it can be. rotated through ,an arc of 180 or more? degrees and means for supporting and guiding said pivotal support througlra path which will cause the saw to sever the ring on predetermined lines. 1 V 5 v v I a machlne for sawlng integrally cast metallic packing ringsinto segments having lappingrends, a saw, a chuclq for holding the rings cutaway to give passage to'a saw blade at determined points, a pivotal Support for saidchuck concentric with thering in position therein, on which it can be retated, through an arc of 180 or'more degrees,

means for supporting and guiding said piv-.

otalsupport through a path which will cause the saw to sever the ring on predetermined lines and means for locking the pivotal support to the supporting and guiding means to hold it in fixed position thereon during the sawing of the ring. I

3. In a machine for sawing integrally cast metallic packing rings into segments having lapping ends, a saw, a chuck for holding the cause the saw to sever the ring on predeter mined circular arcs.

4. In a machine for sawing'integrally cast a a metallic packing rings into segments having I lapping ends, a saw, a chuck for holding the rlngs cut away to give passage to a sawblade the pivotal chuck support-1 whereby it is guided through a circular path which will cause the saw to sever the ring on predetermined clrcular arcs and means for lockmg the pivotal chuck support and itseccentri cally pivoted guide together.

RALPH A. LIGHT. JOSEPI-IW'. PRICE, JR.

at determined points, a pivotal support for said'chuck concentric with the ring in, posi-. I tion'therein, on which it can be rotated, through an arc of 180 or more degrees, an ieccentrically pivoted support and guide for 

